My Inquiry
My Account
NXP Semiconductors S9S12XS256J0CAE
- Part No.:
- S9S12XS256J0CAE
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
S9S12XS256J0CAE.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,086
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
S9S12XS256J0CAE from NXP Semiconductors (formerly Freescale) is a 16-bit HCS12X-based automotive-grade microcontroller featuring 256 KB on-chip flash memory, 12 KB RAM, and integrated CAN 2.0B controller. It operates at up to 40 MHz core frequency with 5V tolerant I/O, supports BDM debugging, and targets engine control units, body electronics, and chassis modules requiring ASIL-B capable firmware execution.
For engineers reviewing the S9S12XS256J0CAE datasheet, S9S12XS256J0CAE pinout, S9S12XS256J0CAE application, or S9S12XS256J0CAE equivalent, key selection criteria include its 80-pin LQFP package, 256 KB flash with EEPROM emulation, dual CAN interface, 10-bit ADC with 16 channels, and hardware XGATE co-processor for deterministic interrupt handling in real-time safety-critical systems.
Technical Context
The S9S12XS256J0CAE implements the S12X CPU core with enhanced addressing (up to 1 MB linear space), XGATE coprocessor for offloading time-critical ISR tasks, and scalable CAN controllers supporting both standard and extended frames. Its memory architecture includes paged flash with background erase/write capability and configurable protection blocks.
It integrates peripheral modules including 16-bit timer (TIM), PWM generator (PWM8B8), serial communication interfaces (SCI, SPI, MSCAN), and analog subsystem (ADC12B16 with 12-bit resolution, 16-channel multiplexer). Power management supports multiple low-power stop/wait modes with wake-up via CAN, IRQ, or RTC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | HCS12X 16-bit CPU with XGATE co-processor for parallel interrupt processing |
| Flash Memory | 256 KB on-chip flash with EEPROM emulation and 100K write/erase cycles |
| RAM | 12 KB on-chip SRAM with retention in low-power modes |
| Clock Speed | Up to 40 MHz core frequency using internal PLL or external crystal (1–32 MHz) |
| ADC | 12-bit successive approximation ADC with 16 input channels and 8 µs conversion time |
| CAN Interfaces | Dual Freescale Scalable CAN (MSCAN) modules compliant with ISO 11898-1, supporting 1 Mbit/s |
| I/O Pins | 64 general-purpose I/O pins with programmable pull-up/down, slew rate control, and interrupt capability |
| Operating Voltage | 4.5 V to 5.5 V supply range, qualified for automotive temperature grade (-40°C to +125°C) |
Pinout & Package
Package: 80-pin LQFP (12 × 12 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDPLL | Power Supply Inputs | Separate digital, analog, and PLL power domains enable noise isolation for ADC and clock stability |
| VSS, VSSA, VSSPLL | Ground Returns | Dedicated ground planes per domain reduce coupling and improve EMI immunity |
| RESET | Active-low Reset Input | Asynchronous reset with internal pull-up; supports external watchdog or power-on reset assertion |
| XTAL, EXTAL | Crystal Oscillator Interface | Supports fundamental-mode quartz crystals (1–8 MHz) or external clock source for system timing |
| CAN0_TX, CAN0_RX | CAN Controller Channel 0 | Differential bus interface compliant with ISO 11898; requires external transceiver for physical layer |
| CAN1_TX, CAN1_RX | CAN Controller Channel 1 | Independent second CAN channel enables gateway or redundancy architectures without software arbitration |
| AD0[0–15] | Analog Input Channels | 16 dedicated ADC inputs with selectable reference (VDDA or internal 2.5 V bandgap) |
| PT0–PT7, PB0–PB7, etc. | Programmable I/O Ports | Multi-function ports support GPIO, SCI, SPI, PWM, timer capture/compare, and interrupt-on-change |
Key Features
| Feature | Design Value |
|---|---|
| XGATE Co-processor | Offloads up to 16 priority-managed interrupt service routines from main CPU, enabling sub-1 µs response latency |
| Flash Security Block | Configurable memory protection with backdoor key access prevents unauthorized read-out of firmware |
| Dual CAN Controllers | Independent message buffers, acceptance filtering, and loopback self-test mode for functional safety validation |
| Background Debug Module (BDM) | Single-wire debug interface supporting full-speed halt/resume, register inspection, and flash programming in-system |
| Low-Power Stop Modes | Multiple stop modes with selective peripheral wake-up (CAN, IRQ, RTC) achieving <10 µA current draw |
| ADC Calibration Support | Hardware-assisted offset/gain calibration registers enable one-time factory calibration for ±1 LSB accuracy over temperature |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Real-time fuel injection timing, spark advance calculation, and OBD-II diagnostics in gasoline/diesel powertrains. IC Role / Device Role / Timing Role: Primary engine management MCU executing closed-loop PID control algorithms with deterministic 100 µs task scheduling. Use Value: Dual CAN interfaces allow simultaneous communication with transmission ECU and instrument cluster while maintaining ASIL-B compliance. | Use Scenario: Centralized control of lighting, door locks, window lifts, and HVAC functions in passenger vehicles. IC Role / Device Role / Timing Role: System coordinator managing LIN slave nodes and CAN gateway functions between body and infotainment networks. Use Value: 256 KB flash accommodates multi-language UI logic, diagnostic services, and OTA update staging area without external memory. |
| Chassis Control System | Advanced Driver Assistance (ADAS) Sensor Hub |
Use Scenario: Brake-by-wire actuation coordination and electronic stability control (ESC) in integrated chassis platforms. IC Role / Device Role / Timing Role: Safety-monitoring MCU performing cross-checks between redundant sensor inputs and actuator feedback loops. Use Value: XGATE co-processor handles high-frequency CAN message parsing and CRC validation independently of main control thread. | Use Scenario: Aggregation and preprocessing of radar, camera, and ultrasonic sensor data before forwarding to central ADAS processor. IC Role / Device Role / Timing Role: Preprocessing node performing time-synchronized timestamping, basic object clustering, and fault detection. Use Value: 12-bit ADC with hardware averaging supports precise analog front-end conditioning for proximity sensors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S12XEP100MALR | 1 MB flash, 64 KB RAM, enhanced XGATE with 32 KB local RAM; no CAN FD support | Targeted at higher-complexity powertrain applications requiring larger code footprint and faster ISR throughput | Select when >512 KB flash or >32 KB RAM is required; pin-compatible but requires PCB layout review due to different thermal pad configuration |
| S9KEAZ128AMLH | ARM Cortex-M0+ core, 128 KB flash, single CAN, 16-bit ADC, lower power consumption | Entry-level automotive body electronics where cost and energy efficiency outweigh legacy HCS12 toolchain dependency | Choose for new designs prioritizing ARM ecosystem compatibility and reduced active current; not pin- or code-compatible with S9S12XS256J0CAE |
Compared with MC9S12XEP100MALR, the S9S12XS256J0CAE offers optimized cost/performance for mid-tier ECUs with sufficient flash for AUTOSAR Classic stack integration, while S9KEAZ128AMLH provides modern ARM-based scalability at the expense of HCS12 legacy software reuse.
Availability
S9S12XS256J0CAE is available at Aetrix Electronics and suitable for engine control units, body control modules, and chassis control systems requiring stable component supply across automotive production lifecycles.
Supply support for S9S12XS256J0CAE includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in automotive microcontrollers and functional safety certification.
The S12XS family was designed specifically for ASIL-B automotive applications requiring deterministic real-time performance, robust EMC behavior, and long-term supply assurance in harsh environments.
FAQ
What is the maximum operating frequency of the S9S12XS256J0CAE?
The S9S12XS256J0CAE achieves a maximum core clock frequency of 40 MHz using its internal phase-locked loop (PLL) with an external crystal or oscillator input ranging from 1 MHz to 32 MHz. This frequency enables deterministic execution of real-time control loops with sub-100 µs latency for critical automotive functions.
Does the S9S12XS256J0CAE support CAN FD?
No, the S9S12XS256J0CAE does not support CAN FD. It integrates two Freescale Scalable CAN (MSCAN) modules compliant only with ISO 11898-1 (Classical CAN), supporting data rates up to 1 Mbit/s with standard and extended frame formats. CAN FD capability requires newer S32K or MPC57xx families.
What debugging interface does the S9S12XS256J0CAE use?
The S9S12XS256J0CAE uses the Background Debug Module (BDM) interface - a single-wire, asynchronous serial protocol - for in-circuit debugging, flash programming, and real-time register inspection. It requires a compatible BDM pod (e.g., P&E Micro USB-ML-12) and supports full-speed halt/resume without halting peripheral operation.
Is the S9S12XS256J0CAE qualified for automotive temperature ranges?
Yes, the S9S12XS256J0CAE is rated for operation from −40°C to +125°C ambient temperature and is qualified to AEC-Q100 Grade 1 standards. Its design includes automotive-grade packaging, extended voltage tolerance (4.5–5.5 V), and built-in self-test features required for under-hood and chassis-mounted applications.
How much user-accessible flash memory does the S9S12XS256J0CAE provide?
The S9S12XS256J0CAE provides 256 KB of on-chip flash memory, of which approximately 248 KB is user-accessible after reserving space for bootloader, security configuration, and flash configuration fields. The flash supports background erase/write operations and EEPROM emulation via dedicated driver libraries.
S9S12XS256J0CAE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 64-LQFP
- Series:
- HCS12X
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- HCS12X
- Core Size:
- 16-Bit
- Speed:
- 40MHz
- Connectivity:
- CANbus, SCI, SPI
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 44
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 12K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.72V ~ 5.5V
- Data Converters:
- A/D 8x12b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
S9S12XS256J0CAE FAQ
1.How can I place an order for S9S12XS256J0CAE through Aetrix?
Please submit a Request for Quotation (RFQ) for S9S12XS256J0CAE on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for S9S12XS256J0CAE reliable?
The price and inventory of S9S12XS256J0CAE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S9S12XS256J0CAE is usually 5 days.
3.What payment methods are accepted for S9S12XS256J0CAE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S9S12XS256J0CAE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S9S12XS256J0CAE?
S9S12XS256J0CAE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S9S12XS256J0CAE order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for S9S12XS256J0CAE?
For technical support, including S9S12XS256J0CAE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S9S12XS256J0CAE requirements.
6.How does Aetrix verify that S9S12XS256J0CAE is sourced from the original manufacturer or authorized distributors?
All S9S12XS256J0CAE products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that S9S12XS256J0CAE meets industry standards.
7.What is the process for return or replacement of S9S12XS256J0CAE?
All S9S12XS256J0CAE units undergo pre-shipment inspection (PSI). If there is an issue with S9S12XS256J0CAE, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The S9S12XS256J0CAE part is unused and in its original packaging.
Return procedure for S9S12XS256J0CAE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
S9S12XS256J0CAE Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
